In case of failure of PIDs in the saloons, what would a driver check first?

When a driver encounters a failure of PIDs (Passenger Information Displays) in the saloons, the prudent first step is to check the Passenger Info Displays MCB (Miniature Circuit Breaker). The PIDs are critical components for delivering essential information to passengers, such as service updates, arrival times, and other relevant announcements. If these displays are not functioning, it indicates an issue that could likely be traced back to electrical supply problems, which is what the MCB addresses.

In this context, checking the MCB dedicated to the Passenger Info Displays is logical because it directly controls the power supply to those specific displays. If the circuit breaker has tripped due to an overload or fault, resetting it may restore functionality immediately.

Other components like the CCTV system, LED display, or audio system MCBs, while important, do not relate directly to the issue of the PIDs. The driver would prioritize the MCB that affects the operation of the primary communication tool for passengers, making prompt resolution of PIDs a priority as part of ensuring passenger comfort and safety.